1967.0000000;-1.4957463
1968.0000000;0.1772709
1969.0000000;-1.1711338
1970.0000000;-1.6877131
1971.0000000;-0.5438079
1972.0000000;-0.5970204
1973.0000000;-1.6009167
1974.0000000;-1.1842238
1975.0000000;-0.5147669
1976.0000000;-1.4546075
1977.0000000;0.7212440
1978.0000000;-0.1066856
1979.0000000;-0.8684118
1980.0000000;-0.6561940
1981.0000000;-1.1529227
1982.0000000;-0.9620571
1983.0000000;-0.1274837
1984.0000000;-0.0242900
1985.0000000;-1.1802011
1986.0000000;-1.4678159
1987.0000000;-0.8256696
1988.0000000;-0.6586607
1989.0000000;-1.3636163
1990.0000000;-0.6044121
1991.0000000;-1.3352492
1992.0000000;-0.8304346
1993.0000000;-0.6176562
1994.0000000;-0.4141411
1995.0000000;-0.1420041
1996.0000000;-0.1415990
1997.0000000;-0.3515197
1998.0000000;-1.6656597
1999.0000000;-0.9525999
2000.0000000;-1.0829369
2001.0000000;0.4306006
2002.0000000;-0.3442161
2003.0000000;-2.2925057
2004.0000000;-2.0816696
2005.0000000;-2.2770996
2006.0000000;-1.5793140
2007.0000000;-1.5010102
2008.0000000;-0.7348880
2009.0000000;-1.3128998
2010.0000000;-0.4233175
2011.0000000;-1.7233915
2012.0000000;-1.5546405
2013.0000000;-0.3780202
2014.0000000;-0.2866751
2015.0000000;-0.7428957